7 hours ago
tl:dr - check for a firmware update.
Long version:
I was getting this problem on my TabX with the older version 3.8.4x of MS AFTER a firmware update early in the year (January??). I.E. the dark status bar with white print would go to white on white whenever I touched the bar and used the menu to change things like WiFi, Bluetooth, or frontlights. Pretty much every time - it would eventually correct itself - I assume after some kind of re-write. NB the Force refresh supplied by Boox did NOT fix this. Nor was it limited to MS, I have another app which also does it.
Then, a few days ago (22nd of September?) I installed a new firmware update which I hoped would fix it, but it didn't.
However, today's (for me) update to 3.9 has resolved the issue as far as I can see, with the change to black on white. My only disappointment is that I actually preferred the white on black bar... Oh well...
Long version:
I was getting this problem on my TabX with the older version 3.8.4x of MS AFTER a firmware update early in the year (January??). I.E. the dark status bar with white print would go to white on white whenever I touched the bar and used the menu to change things like WiFi, Bluetooth, or frontlights. Pretty much every time - it would eventually correct itself - I assume after some kind of re-write. NB the Force refresh supplied by Boox did NOT fix this. Nor was it limited to MS, I have another app which also does it.
Then, a few days ago (22nd of September?) I installed a new firmware update which I hoped would fix it, but it didn't.
However, today's (for me) update to 3.9 has resolved the issue as far as I can see, with the change to black on white. My only disappointment is that I actually preferred the white on black bar... Oh well...
You're only paranoid if you're wrong 
I'm using an Onyx Boox Tab X, and play low brass: mainly 'Bone and Tuba
I'm using an Onyx Boox Tab X, and play low brass: mainly 'Bone and Tuba